Filter.



G. W. NTZ.

FILTER.

APPLIGATION FILED SEPT.16,1907.

907,636. Patented Dec. 22, 1908.

-To all whom it 'may concern:

GEORGE W. NTZ, OF CHICAGO, ILLINOIS.

FILTER.

Specification ofLetters Patent.

Patented nec. sa, 190e.

.Application filed September 16, 1907. Serial No. 392,972.

Be it known that I, GEORGE W. NTZ, a citizen of the United States ofAmerica, and a resident of Chicago, in the county -`of Oook and StateofIllinols, have invented Vcertain new and useful Improvements inlfilters, of which the following is a specification.

This invention relates to th at class of filters in which an annularfiltering septum of fibrous material is employed; and the presentimprovement has for its object to provide a simple and efficient structural formation and combination of parts by means of which a constantcleaning of the inner or induction surface of the'filtering septum isautomatically effected during actual use, and which in addition affordsa substantial and eco-v nomical assemblage of parts, allas willhereinafter more fully appear.

In the accompanying drawings Figure 1 is a side elevation of a filterembodyingv the present invention. Ilig. 2, is a horizontal section ofthe same, on line x-x, lig. 1.' Fig. 3, is a vertical section of thesame on line Fig. 2. Iig. 4, is a detail perspective view of one of theholding clips.

Similar numerals. of reference indicate like parts in the differentvie-ws'.

Referring to the drawings,l1 represents the filter hotsing, preferablyof the inverted bell form shown, and 2 is the closure head for the opentop of said -hot sing. To such end the head is formed with van annularrecess 3 for the reception of the corresponding top rim of the housinand for an interposed packing ring 4, as s own.

l5, is thev inlet neck, and 6 the outlet neck of the filter; such necksare formed integral with the closure head 2, and are arranged inhorizontal alinement one with the other and overhang said head toreceive theinduction and eduction connections of the filter, as Well asto afford an attachment for the connecting yoke hereinafter described.

7, is a depending annular rim' or enlargement on.A the underside oftheclosure head 2, for the attachment ofthe annular filtering septumhereinafter described, and to such end said rim is providedl with anout-turned fi e 8 at its lower end.

9 1s a spring ring or clip encircling the filtering septum abovethe-aforesaid flange and adapted to hold the same in place, and yetafford' a ready detachment of parts when required.

10, is a vertical branch passage formed in 'ber of the filter housin therim or enlargement 7 and connecting the passage of the inlet neck 5 withthe interior of the filtering septum.

11, is Va companion vertical branch passage formed in the closure head2, and connecting the passage of the outlet neck 6 with the in terior ofthe housing 1 at a point in the exterior of the filtering septum.

12, is the filtering se tum above referred y to and which consists o acylindrical shell of leather or like porors materlal, the u per end ofwhich is attached in the manner a ove set forth to the depending rim orenlargement 7 of the closure head, while its lower end is attached in asub stantiallysimilar manner to a tensioning head now to be described.

13, is a loose tensioning or weighted head arranged loosely within thelter housing and adapted to have free movement thereinunder a jolting ofthe filter in a rse of the same upon motor vehicles and the like and forthe purpose hereinafter stated.

14, is an out-turned flange near the upper end of the head 13, and 15 isa spring ring or"v cli securing the filtering septum to the head be owsaid flange and adapted to hold the septum in place and yet afford aready detachment of the parts when required.

With the above described arrangement of parts the filtering septum 12and its tension ing head 13 hangs loosely within the cham? 1, and freeto move therein inresponse to t e jolting of the filter when used uponan automobile or the like. Such jolting action, it has been found frompractical experience imparts an undulating movement to the septum whichis adapted to dislodge in a ver effective manner any solid matter from te induction surface of the septum, and cause such matter to descend andaccumulate upon the head 13 vand the immediately adjacent portion of theseptum leaving the main portion of the septum clean during a longcontinued use.

16, is the connecting oke above referred to, of a .U sha e with t eupper ends of its parallel arms ormed with counterpart eyes 17 adaptedto fit over the overhanging por tions of the inlet and-outlet necks 5and 6;

the construction being such that said arms can be sprung apart and theaforesaid eyes slipped Oielthe necks 5 and 6 and then pressed intoplaccato afford a ivotal connection between said yoke and t e closurehead of the filter; As so arranged the yoke and closure head arealways'connected and there l through the bottom part of the yoke andhaving bearing against the central and lower portion ofthe filterhousing 1, and so that by an adjustment of said screw the filter housingis forced and held to its before described head attached to the lowerend of sai bearin Y in the closure head 2.

Having thus fully described my saio' invention what I claim as new anddesire to secure by Letters Patent, is

1. In a lter, the combination of ahousing, an annular `filtering septumsuspended within said housing by its upper end, a Wei hted head attachedto the lower end of sai septum and forming a closure therefor, an inlet.passage connecting with the interior of said septum; and an outletpassage connecting with the interior of the housing, substantially asset forth.

2. In a filter, the combination of a housing, an annular filteringseptum suspended Within said Ahousing' by its upper end, a wei htedseptum and forming a closure therefor, an inlet passage connecting withthe interior or said septum at its upper end, and an outlet passageconnecting With the interior of the housing at its upper end,substantially as set lforth.

3. In a filter, the combination of a housing, an annular filteringseptum suspended Within saio housing by its upper end, a wei hted headattached to the lower end of sai septum and forming a closure,'therefor, a spring ring encircling saidgseptum andes-curing the sameto the weighted head. an inlet passage connecting with the interior ofsaid septum, and an outlet passage connecting with the interior of thehousing, substantially as set fr forth.

4. In a filter, the combination of a housing, an annular filteringseptum suspended Within said housing by its upper end, a weighted headattached to the lower end of said septum and forming a closure therefor,a spring ring encircling said septum and securing the same to theWeighted head, an inlet passage connecting With the interior of saidseptum at its upper end, and an outlet passage connecting with theinterior of the housing at its upper end, substantially as set forth.

5. In a filter thecombination of an open top housing, a closure headittin the top of said housing andl provided with et andoutlet necks andwith a depending rim, an annular filtering septum attached at its up erend to said rim, `and a spring ring enc'irc ing the septum and securinthe same to said rim, su stantially as set orth.

G. In a filter the combination of an open top housing, a closure headttin the top of 'sald housing anoprovided with et and outletnecksarranged in horizontal alinement, a single piece connecting yoke havingeyes at the up er ends of'its arms adapted to engage over t e necksaforesaid, and a clamping screw passing through the lower end of saidyoke and bearing a ainst` the underside of the housing, said yo e beingadapted to be sprung apart to receive said necks in an asemllage of theparts, substantially as set ort .Signed at Chicago, Illinois, this 13thday of Soeptember 1907. 4 GEO. W. NUTZ.

Witnesses:

ROBERT BURNS, HENRY MOE.

